258414921 has 8 divisors (see below), whose sum is σ = 382836960. Its totient is φ = 172276596.

The previous prime is 258414899. The next prime is 258414929. The reversal of 258414921 is 129414852.

It is not a de Polignac number, because 258414921 - 2¹⁷ = 258283849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (258414929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4785435 + ... + 4785488.

It is an arithmetic number, because the mean of its divisors is an integer number (47854620).

Almost surely, 2^258414921 is an apocalyptic number.

It is an amenable number.

258414921 is a deficient number, since it is larger than the sum of its proper divisors (124422039).

258414921 is an equidigital number, since it uses as much as digits as its factorization.

258414921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570932 (or 9570926 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 258414921 is about 16075.2891420341. The cubic root of 258414921 is about 636.9507629278.

The spelling of 258414921 in words is "two hundred fifty-eight million, four hundred fourteen thousand, nine hundred twenty-one".